English: Macaca fascicularis aurea stone tools.
Each tool is accompanied by a photo of the tool in use by a macaque prior to its collection. Each tool is represented by a photograph (with 1 cm scale) and a 3D scan of the same face, displaying use-wear. Tool codes are: (a) Tik01; (b) Che01; (c) Amb02; (d) Orc01; (e) Sln01; (f) Amb03.
Macaque photos by Michael D. Gumert, tool photos by Michael D. Gumert and Michael Haslam.
https://dx.doi.org/10.1371/journal.pone.0072872.g002
Date 13 September 2013, 03:35:40
Source Haslam M, Gumert MD, Biro D, Carvalho S, Malaivijitnond S (2013) Use-Wear Patterns on Wild Macaque Stone Tools Reveal Their Behavioural History. PLoS ONE 8(8): e72872. https://dx.doi.org/10.1371/journal.pone.0072872
Author Haslam M, Gumert MD, Biro D, Carvalho S, Malaivijitnond S (2013)
Source: https://commons.wikimedia.org/wiki/File:Macaca_fascicularis_aurea_stone_tools_-_journal.pone.0072872.g002.png

The crab-eating macaque (Macaca fascicularis), also known as the long-tailed macaque, is a cercopithecine primate native to Southeast Asia. It is referred to as the cynomolgus monkey in laboratories. It has a long history alongside humans; they have been alternately seen as agricultural pests, sacred animals in some temples, and more recently, the subject of medical experiments. The crab-eating macaque lives in matrilineal social groups with a female dominance hierarchy,[ and male members leave the group when they reach puberty.